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Related Experiment Videos

Picturing unilateral spatial neglect: viewer versus object centred reference frames

A Chatterjee1

  • 1Department of Neurology, University of Alabama at Birmingham.

Journal of Neurology, Neurosurgery, and Psychiatry
|October 1, 1994
PubMed
Summary
This summary is machine-generated.

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Patients with spatial neglect may experience deficits in viewer-centered or object-centered reference frames. This study found these frames are dissociable, meaning neglect can predominantly affect one system.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Vision Science

Background:

  • Spatial cognition relies on viewer-centered and object-centered reference frames.
  • Left-sided neglect presents ambiguity regarding the reference frame involved.

Purpose of the Study:

  • To differentiate between viewer-centered and object-centered spatial reference frames in patients with neglect.
  • To determine if spatial neglect predominantly affects one reference frame.

Main Methods:

  • Eight patients with neglect were tasked with centering objects and lines in photographs.
  • Analysis focused on image placement (right for viewer-centered, left for object-centered) to identify the affected frame.

Main Results:

  • Four patients showed viewer-centered neglect.

Related Experiment Videos

  • Three patients demonstrated object-centered neglect.
  • One patient exhibited variable performance, suggesting combined frame involvement.

    • Conclusions:

    • Viewer-centered and object-centered reference frames are functionally dissociable in spatial neglect.
    • Patients can exhibit predominantly viewer-centered or object-centered spatial neglect.